Astronomy Principles and Practice Fourth Edition.pdf

Answers to problems
Chapter 7
1. 32 ◦ ,78 ◦ , 259 ◦ ,20 ◦ 55 ′ ,62 ◦ 17 ′ ,28 ◦ 18 ′ , 234 ◦ 09 ′
2. 10 ◦ ,53 ◦ ,17 ◦ 14 ′ , 164 ◦ 41 ′ ,77 ◦ 10 ′
3. 600, 3180, 1034, 9881, 4630
4. 472·1, 3405, 415·7, 1614
5. (i) c = 39 ◦ 59 ′ , B = 48 ◦ 19 ′ , A = 66 ◦ 53 ′
(ii) a = 56 ◦ 22 ′ , B = 70 ◦ 15 ′ , C = 67 ◦ 46 ′
(iii) b = 145 ◦ 29 ′ , A = 69 ◦ 19 ′ , C = 37 ◦ 07 ′
(iv) a = 159 ◦ 00 ′ , A = 44 ◦ 22 ′ , B = 42 ◦ 24 ′
6. (i) 5786 nautical miles (ii) 5220 nautical miles
7. 1 d 19·h77
8. 5582 km; 53 ◦ 48 ′ N
9. 72 ◦ 49 ′
Chapter 8
1. Figures A8.1(a), A8.1(b)
2. Figure A8.2
3. Figure A8.3
4. Figure A8.4
5. λ = 90 ◦ ; β = 21 ◦ 33 ′ N
6. 6 ◦ 34 ′
8. 95 ◦ 55 ′ WofN;95 ◦ 55 ′ EofN
9. 29 ◦ 46 ′ N; 180 ◦ 01 ′ . Dec 21st; June 21st
(Hint: The points of intersection of the galactic equator with the ecliptic must be at and )
10. (Hint: PXZ = 90 ◦ when azimuth is a maximum for a circumpolar star)
11. 47 ◦ 42 ′ (3 h 10 m 48 s ); φ ≥ 51 ◦ 16 ′ N
12. 19 ◦ 46 ′
14. 117 ◦ 0·′14 (7 h 48 m 01 s );10 h 57 m 30 s
15. 49 ◦ 57 ′ E
16. 59 ◦ 47 ′ 09 ′′ ;72 ◦ 54 ′ 25 ′′
460